Ihe nchọpụta foto mmetụta uche ọhụrụ

Ọhụrụfotodetector nke uche dị elu

N'oge na-adịbeghị anya, otu ndị nyocha na Chinese Academy of Sciences (CAS) dabeere na polycrystalline gallium-rich Gallium oxide Materials (PGR-GaOX) tụrụ aro maka oge mbụ atụmatụ atụmatụ ọhụrụ maka mmetụta dị elu na nnukwu nzaghachi ọsọ ọsọ dị elu.fotodetectorsite na njikọ pyroelectric jikọtara ọnụ na mmetụta fotoconductivity, na e bipụtara nyocha dị mkpa na ihe ndị dị elu. Ike dị eluihe nchọpụta fotoelectric(maka miri ultraviolet (DUV) ruo X-ray band) dị oke egwu n'ọtụtụ mpaghara, gụnyere nchekwa mba, ọgwụ na sayensị ụlọ ọrụ.

Otú ọ dị, ihe ndị dị ugbu a semiconductor dị ka Si na α-Se nwere nsogbu nke nnukwu ntanye nke ugbu a na obere X-ray absorption coefficient, nke siri ike izute mkpa nke nchọpụta dị elu. N'ụzọ dị iche, oghere oghere (WBG) semiconductor gallium oxide ihe na-egosi ikike dị ukwuu maka nchọpụta fotoelectric ike dị elu. Otú ọ dị, n'ihi na-apụghị izere ezere miri larịị ọnyà n'akụkụ ihe na enweghị irè imewe na ngwaọrụ Ọdịdị, ọ bụ ihe ịma aka ịghọta elu uche na elu nzaghachi ọsọ elu ume photon detectors dabeere na mbara-band oghere semiconductor. Iji dozie ihe ịma aka ndị a, otu ndị na-eme nchọpụta na China emebela pyroelectric photoconductive diode (PPD) dabere na PGR-GaOX maka oge mbụ. Site na ijikọ mmetụta pyroelectric interface na mmetụta fotoconductivity, a na-eme ka arụmọrụ nchọpụta dịkwuo mma. PPD gosipụtara mmetụta dị elu na DUV na ụzarị X, yana ọnụego nzaghachi ruo 104A / W na 105μC × Gyair-1 / cm2, n'otu n'otu, karịa 100 ugboro karịa ndị nchọpụta gara aga mere nke ihe ndị yiri ya. Na mgbakwunye, mmetụta pyroelectric interface nke sitere na polar symmetry nke mpaghara mmebi nke PGR-GaOX nwere ike ịbawanye ọsọ nzaghachi nke onye nchọpụta site na ugboro 105 ruo 0.1ms. Tụnyere fotodiodes ndị a na-ahụkarị, ụdị ikike nke onwe PPDS na-arụpụta uru dị elu n'ihi mpaghara pyroelectric n'oge mgbanwe ọkụ.

Na mgbakwunye, PPD nwere ike ịrụ ọrụ na ọnọdụ ihunanya, ebe uru ahụ dabere na voltaji elere anya, yana enwere ike nweta uru dị elu site na ịba ụba voltaji. PPD nwere nnukwu ike ngwa na obere ume ike yana sistemụ nkwalite onyonyo dị elu. Ọrụ a abụghị naanị na-egosi na GaOX bụ ihe na-ekwe nkwafotodetector dị eluihe onwunwe, ma na-enyekwa atụmatụ ọhụrụ maka ịghọta elu arụmọrụ elu ike photodetectors.